Data Sheet for Product

Siemens Industry, Inc. Page 3 of 19
The 1200EFB controllers support 3 FLN trunks for
communications with a total of 96 FLN devices, or
one BACnet MS/TP trunk supporting up to 96
devices. The 1200ELB controllers support 1 FLN
trunk for communications with a maximum of 126
L
ONWORKS devices.
The program and database information stored in the
Power MEC RAM memory is battery-backed. This
eliminates the need for time-consuming program and
database re-entry in the event of an extended power
failure. When battery replacement is necessary, the
controller board illuminates a “battery low” status LED
and can send an alarm message to selected printers
or terminals.
The firmware, including the operating system, is
stored in non-volatile flash ROM memory. Flash ROM
is easily upgradeable at the job site. This provides for
ease of upgrade as new firmware updates are made
available.
Brownout protection and power recovery circuitry
protect the controller board from power fluctuations.
PX Series Enclosure Assemblies
PX series enclosures house both electronic and
pneumatic components. The enclosures include a
perforated backplane for mounting of the PXC series
controllers, Power Modular Equipment Controllers,
Point Expansion Modules or other electronic or
pneumatic components. Two sizes are available (19”
and 34”) that can house the Power MEC:
 19” enclosure, hinged door and key lock
 34” enclosure, hinged door and key lock
 18" enclosure, pull-box type utility cabinet (for
accessories, not for MEC)
The enclosures are constructed of metal to
accommodate secure conduit fittings and protect
components against electrical transients. The
enclosure allows space for easy wire routing and
terminations.
Service Box
Service boxes are available for mounting in the 19” or
34” enclosures. Models provide step down power
from either 115 Vac or 230 Vac to 24 Vac and offer
protection against electrical transients. The service
boxes are sized in various power ratings to provide
one or two Class 1 Power Limited terminations for use
inside the enclosure to power controllers and I/O
modules, and one Class 2 termination for use outside
the enclosure to power remote devices. The 115 Vac
versions provide two 115 Vac outlets for accessory
devices such as modems and laptops. Optional
sidewall kits are available for service box installation
in other NEMA Type 1 or better enclosures such as
motor control cabinets.
Figure 3. PX Series Enclosure Assemblies.
Analog and Digital Point Expansion Modules
In addition to the points on the input/output board, the
Power MECs support analog and digital Point
Expansion Modules. The controller can support a
maximum of any combination of eight modules. They
can be mounted next to or remote from the controller
depending upon the job requirements. The total
length of the wiring run for Point Expansion Modules
is a maximum of 200 feet (61 meters) on the MEC
expansion bus. Point Expansion Modules are also
compatible with the APOGEE P1 FLN.
Point Expansion Module details are:
 Analog Point Expansion Module – 4AI, 4AO
 Analog Point Expansion Module – 8AI
 Digital Point Expansion Module – 4DI, 4DO
 Digital Point Expansion Module – 8DI, 4DO
The analog input points are user selectable to be 0-
10V, 4-20 mA, 1K RTD or optional 100K Thermistor
input. The analog output points are also user
configurable to be 0-10V or 0-20 mA.
The digital inputs are dry contact with four of the
inputs being pulse accumulator points. The relayed
digital output points support 110/220V Form C relays.
Figure 4. Analog and Digital Point Expansion Modules.